A 413×240-Pixel Sub-Centimeter Resolution Time-of-Flight CMOS Image Sensor with In-Pixel Background Canceling Using Lateral-Electric-Field Charge Modulators

📋 论文概要

该论文提出了一种413×240像素的亚厘米分辨率飞行时间(ToF)CMOS图像传感器，采用像素内背景消除技术，解决了传统ToF传感器需要多个子帧来消除背景光影响的问题。通过创新的像素设计实现了高精度距离测量。

💡 主要创新点

• 提出像素内背景消除技术，无需多个子帧即可抑制背景光干扰，简化了系统架构。
• 采用新型像素结构实现亚厘米级距离分辨率，在413×240像素阵列上达到高精度ToF成像。

🏷 关键词

📄 原文摘要

have a wide range of applications, such as 3D mice, gesture-based remote controllers, amusement, robots, security systems, and automobiles. Numerous ToF range imager developments have been reported [1-4]. Recent developments are often based on CMOS image sensor technology with pinned photodiode options [5-7], which are suitable for cost-effective mass production. Reported CMOS ToF range imagers use singletap or two-tap lock-in pixels; to cancel the influence of background light, two or four sub-frames are used to produce a background-canceled range image. These architectures, however, have difficulty with precise range measurements of moving objects, because background light cancelation is not guaranteed for moving objects. Lock-in pixels without any charge-draining gate suffer from

👥 作者与机构

Sang-Man Han1, Taishi Takasawa1, Tomoyuki Akahori2,

Keita Yasutomi1, Keiichiro Kagawa1, Shoji Kawahito1,2 Shizuoka University, Hamamatsu, Japan, Brookman Technology, Hamamatsu, Japan 1 2 Time-of-Flight (ToF) range imagers